NGK 5592 PFR7W-TG Laser Platinum Spark Plug for Audi V6/V8/V10

Vehicle Fitment

• 2005-2008 Audi A4 Sedan/Wagon (Quattro and non-Quattro), 3.2L V6
• 2007-2009 Audi A4 Cabriolet, Quattro, 3.2L V6
• 2005-2008 Audi A6 Sedan/Wagon (Quattro and non-Quattro), 3.2L V6
• 2007-2008 Audi RS4 Sedan, Quattro, 4.2L V8
• 2008 Audi RS4 Cabriolet, Quattro, 4.2L V8
• 2008-2010 Audi R8 Coupe, Quattro, 4.2L V8
• 2010 Audi R8 Coupe, Quattro, 5.2L V10 (up to production date 09/06/10)

Fitment Notes

• OE cross-reference: Audi 101 905 621, 101 905 621 C
• Quantity per engine varies by cylinder count: 6 plugs for 3.2L V6 applications, 8 for 4.2L V8, 10 for 5.2L V10 - this listing is for a single plug unless otherwise specified
• Non-turbo applications only - confirm your engine is naturally aspirated before ordering
• Some later B8-chassis A4/A5 and Q5 models use a related but different NGK plug for their 2.0T/3.0T engines - confirm your engine size and generation match this listing (3.2L/4.2L/5.2L non-turbo) rather than a turbocharged 2.0T or 3.0T variant

Features

• Laser-welded dual platinum construction - platinum center electrode and hybrid ground design - for high ignitability and long service life
• Hybrid ground configuration with 3 ground electrodes combines fine-wire performance with strong anti-fouling resistance
• Trivalent metal plating provides strong anti-corrosion and anti-seizing protection
• High-grade pure alumina ceramic insulator with 98% pure copper core prevents overheating and supports reliable starts
• Engineered specifically to OE specifications for stable idling, improved fuel efficiency, and lower emissions

Specifications

• NGK stock number: 5592
• Service/OE number: PFR7W-TG
• Center electrode material: Copper core, platinum tip
• Ground electrode: Copper core, standard tip, 3 ground electrodes (hybrid configuration)
• Terminal type: Non-removable nut
• Thread diameter: 14mm
• Hex size: 5/8 in.
• Heat range: 7
• Pre-gap: 0.036 in.
• Reach: 0.75 in.
• Resistance: 1,000 ohm
• Seat type: Flat
• Torque spec: 18-25.3 lb-ft (cast iron), 18-21.6 lb-ft (aluminum)

Included Components

• 1x Spark Plug

Product Description

The NGK 5592 (PFR7W-TG) is a Laser Platinum spark plug engineered to OE specifications for Audi's naturally aspirated 3.2L V6, 4.2L V8, and 5.2L V10 engines, matching the factory 101 905 621 C part number used across the 2005-2008 A4 and A6, the 2007-2008 RS4, and the 2008-2010 R8. Its laser-welded dual platinum construction combines a platinum center electrode with a hybrid, three-ground-electrode design, aiming for the fine-wire performance benefits of a platinum plug alongside stronger fouling resistance.

The high-grade alumina ceramic insulator and 98% pure copper core help the plug resist overheating and deliver reliable starts, while trivalent metal plating protects against corrosion and seizing in the cylinder head over the plug's service life. Heat range 7 and a 0.036 in. pre-gap are set to OE specification for these naturally aspirated V6/V8/V10 applications.

This is a strong OE-quality replacement for Audi owners across the covered A4, A6, RS4, and R8 models. Since plug count scales with cylinder count, make sure to order the correct quantity for your engine - 6 for V6, 8 for V8, or 10 for V10 - as this listing covers a single plug. Note that later turbocharged Audi models (2.0T, 3.0T) use a different NGK plug, so this one is specifically for the naturally aspirated 3.2/4.2/5.2L engines listed above.